LM2595: Buck Regulator, Switching, 1.0 A

The LM2595 series of Buck Switching Regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. Requiring a minimum number of external components, these Buck Switching Regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator. The LM2595 series operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead D2PAK surface mount package. A standard series of inductors are available from several different manufacturers optimized for use with the LM2595 series. This feature greatly simplifies the design of switch-mode power supplies.Other features include a guaranteed +/-4% tolerance on output voltage under specified input voltage and output load conditions, and +/-15% on the oscillator frequency. External shutdown is included, featuring typically 80 µA standby current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions. See LM2596 for 3.0A and LM2594 for 0.5A.

Features
  • Adjustable output voltage range, 1.2V to 37V +/-4% max over line and load
  • Available in TO-220 and D2PAK packages
  • Guaranteed 1A output load current
  • Input voltage range up to 40V
  • Excellent line and load regulation specifications
  • 150 kHz fixed frequency internal oscillator
  • TTL shutdown capability
  • Low power standby mode, Iq typically 80 µA
  • Uses readily available standard inductors
  • Thermal shutdown and current limit
Benefits
  • Flexible to configure for different output voltages and applications
  • Different mounting options
  • High power designs
  • Can be used with several input voltage supplies (+12V, +24V, +36V)
  • Provides a stable power supply
  • No external component required to set frequency
  • Easy to implement low power modes
  • Power saving mode
  • Quick and easy implementation
  • Additional protection against faults
Applications
  • Simple high-efficiency step-down (buck) regulator
  • On-card switching regulators
  • Positive to negative converter
End Products
  • LCD-TV SMPS
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
150 KHz 1.0 A Step-Down Switching RegulatorLM2595/D (566.0kB)2
Evaluation Board Documents (8)
Document TitleDocument ID/SizeRevisionRevision Date
LM2595ADPBCKGEVB BIll of Materials ROHS compliantLM2595ADPBCKGEVB_BOM_ROHS.PDF (44.0kB)0
LM2595ADPBCKGEVB Gerber Layout Files (Zip Format)LM2595ADPBCKGEVB_GERBER.ZIP (17.0kB)0
LM2595ADPBCKGEVB SchematicLM2595ADPBCKGEVB_SCHEMATIC.PDF (23.0kB)1
LM2595ADPBCKGEVB Test ProcedureLM2595ADPBCKGEVB_TEST_PROCEDURE.PDF (398.0kB)0
LM2595ATPBCKGEVB Bill of Materials ROHS CompliantLM2595ATPBCKGEVB_BOM_ROHS.PDF (45.0kB)0
LM2595ATPBCKGEVB Gerber Layout Files (Zip Format)LM2595ATPBCKGEVB_GERBER.ZIP (14.0kB)0
LM2595ATPBCKGEVB SchematicLM2595ATPBCKGEVB_SCHEMATIC.PDF (21.0kB)0
LM2595ATPBCKGEVB Test ProcedureLM2595ATPBCKGEVB_TEST_PROCEDURE.PDF (364.0kB)0
Package Drawings (3)
Document TitleDocument ID/SizeRevision
5 LEAD D2PAK936A-02 (35.0kB)D
TO-220 5 LEAD314D-04 (61.5kB)H
TO-220 5 LEAD OFFSET314B-05 (260.2kB)L
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
LM2595ADPBCKGEVBActivePb-freeStep-Down Switching Regulator Evaluation Board
LM2595ATPBCKGEVBActivePb-freeStep-Down Switching Regulator Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
LM2595DSADJGLast ShipmentsPb-free Halide freeD2PAK-5936A-021Tube50
LM2595DSADJR4GActivePb-free Halide freeD2PAK-5936A-021Tape and Reel800Contact BDTIC
LM2595TADJGActivePb-free Halide freeTO-220-5314D-04NATube50Contact BDTIC
LM2595TVADJGLast ShipmentsPb-free Halide freeTO-220-5314B-05NATube50
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
LM2595DSADJR4GStep-DownVoltage Mode4.5401.25 to 37185150
LM2595TADJGStep-DownVoltage Mode4.5401.25 to 37185150
150 KHz 1.0 A Step-Down Switching Regulator (566.0kB) LM2595
LM2595ADPBCKGEVB BOM ROHS LM2595ADPBCKGEVB
LM2595ADPBCKGEVB GERBER LM2595ADPBCKGEVB
LM2595ADPBCKGEVB SCHEMATIC LM2595ADPBCKGEVB
LM2595ADPBCKGEVB TEST PROCEDURE LM2595ADPBCKGEVB
LM2595ATPBCKGEVB BOM ROHS LM2595ATPBCKGEVB
LM2595ATPBCKGEVB GERBER LM2595ATPBCKGEVB
LM2595ATPBCKGEVB SCHEMATIC LM2595ATPBCKGEVB
LM2595ATPBCKGEVB TEST PROCEDURE LM2595ATPBCKGEVB
5 LEAD D2PAK LM2931
TO-220 5 LEAD LM2931
TO-220 5 LEAD OFFSET LM2931
LM2595